Plastic obturator for gun breeches



July 3, 1923.

SCHNEIDER msuc oisg'unk'ron FOR mm snsscmss 8 Shuts-Shoot 1 F1106 June 9, 1921 July 3, 1923.

E. SCHNEIDER PLASTIC OB'I'URA'I'OR FOR GUN BRBBCHBS F1106 Juno 9, 1921 8 Shuts-Shoot 2 E. SCHNEIDER PLASTIC OBTURM'OR FOR GUN BRBBCHBS July 3, 1 923.

rim June 1921 8 Shuts-Shut 3 BESF AVAiLABLE COPY Patented July 3, 1923.

sues ns-scmtmsa, or'raaxs, mace,

Aweso e -scmmnms. a cm, or rams,

. l f. 5 ramer, A JOINfQ-STOCK'COMPANY OF FRANCE.

,To all whomit condemi Be it known, that 'IE'ceims Sonrmmsn, a citizen of the Republic of France, resident for Gun, reeches which invention is fully set forth in the following spe'cification.

The subject of the present invention is an improvement in plastic obturators for the breeches of guns, comprising, in the known ,way, a; pad of plastic material contained in a wire gauze or other bag, which is held between split metal rings, having substantially ri ht triangular ,cross sections.

16 ig. 1 of the accompanying drawing is a diametrical section alon an axial lane of an obturator of this kind. In this gure, A represents a ringBof plastic material contamed in a bag of wire gauze or some 20 other suitable material. The pad thus enveloped is held between split metal rings C, D of steel or other suitable metal; these rings have a transverse section on a radial line substantiall the she of a right anas led triangle. e hypo enuse sides a of t e outer rings, and d of the inner ring bear against the ad, while the side a of the outer rin ear a inst the wall of the bench, an one of t e sides (1 of the inner ring bears against the spindle of the movable head.

One of the rings of the ordinary obturators is shown in detail, in sectional elevation, 1"i 2, in cor nding partial plan F1 3,

36 an in section ong4-4of Fig. 8, Fig.

As shown by these Figs. 2 8 and 4, the cleft in the rin is obtained byrcutting the ring along an o lique plane P om a line p along one of the shout sides 0' of one of the 40 triangular sections of the ring. The cleft is thus bordered by a line 72, two curves 1), p which are the intersections of the plane of section with the bearing surfaces 0, c of the ring and a oint p inwardly situated which tends to sink into the envelope B o the pad.

In practice the bag is often punctured by the. retainin rings thus split and consequently, a lea age of plastic materia occurs.

so This disadvan is prevented in the present invention, a speclalmethod of splitting the expansi le rings 0 and D.

A rin lit aocordin to the present invention l8 s own in detail in Figs. 5 to 8.

Fig. 5 is a sectional elevation of the new ffringcorresponding'with the section Fig. 2 l of an ordinary ring.

of. Paris,'i France,' have ,invened-. new and; B useful Im rovements in PlasticObturators Fig. 6 is a corres onding partial plan.

Fig. 7 isa partia transverse section along 7';7 of Fig. 6.

F1 ."8 is a perspective view with a part bro en away. I

In these figures, the rings are substantially right triangular in cross section, the same being split diagonally toward their hypotenuse or base sides from the apex edges opposed to said sides. The hypotenuse or ase sides of the rings bear against the outer and inner inclined edge portions of the ring shaped plastic body, and when the obturator is assembled with the breech block and the latter is closed, the sides 0 and d bear against the wall of the breech and the spindle of the mushroom head respeotively. The rings are preferably split on curved planes and the radially-overlapping ends of the same thus have opposed curved triangular faces 2 the bases of which abut the plastic body. one of the radially overlapping ends of each ring terminates in astraig t edge 3 contacting with the plastic body and the other terminates in the point which bears against a portion of the ring lnterposed between said point and the plastic body. A transverse section through the radially-overlapping ends of an one of the rings intersects the same on a strai ht line parallel to the hypotenuse or base si e while a similar section through the overlapping ends of a ring such as illustrated in Figs. 1 to 4 intersects the same on a line 1 parallel with an outer side of the ring.

With the new method of splitting the rings, their la 3 meet on the plastic sub stance along a ine, instead of meeting in a point whereby penetration of the bag by the ends of the overlap ing portions and resultant leakage of PYflStlC material, is prevented.

I claim:

1. An obturator comprising a plastic pad, and a diagonally split ring triangular in cross sectionthe base side of which bears ,againstsaid pad, the inner end of said ring terminating in a straight ed e COIitaCtlrig with the ad and dis osed su stantially at right ang es to the e ges of said base side.

2. An obturator comprising a ring shaped 7 plastic pad, a n da'ings at one sic le thereo said a ring s 'u trian la): in ross ction, thiaba seasiiiabfwhfi be I I ai ssii outer and inner edge'portions of saig pad. each of said rin s bein s lit diagonally towa'id 611% mat f at Hearse 'ea a ap:

posed thereto.

3. In an obturator, the ombiaa tionpf a body inc1uding a bag and plastic "iaad' thereln, and' a ring trian "1315, imemg seq tim the base sileof wthie beals'is aga'uigz an he m1 5 9 J!!! 544, r 2: s .i wl an lfi t ry id .flgom t e 11 ex ed op'posed thez etq ,mn g iiiqsa ar thetgq bant wa 54 p at1c..pad. am; rmm ma m stanti'ally ghti i ag l n n assegtlen b l y -wnuse 'sideof which bears againsteau inaesledg pq iqnrs id rin i ei l'gspl iegqnally togvapdthebase si e from the apex e gapppos lt qnetp- ,5- .In an btux z nlthelycdmbin tian .ofa

ring,' .sh a 1) ed lagtie; pad,,having. m ter and inner inc stantially right triangulap m cross section the hypo nusensideslof .which bear, against.

said outer,andjnnen-inclined egige. portions, each of said ring being spht dlagonallytome edge portions; and rings sub:

.,ward,. .h potenase side. from the apex .iedgeo p bse mhereto.

An obturator comprlsing a pad and :1 ring bearing against the same, said rin bem% emit-diagonally to provide overlapping h 1iafi'ri'g 'o'p'po'sed curved triangular faeeg the base of the innermost triangular iface belii g ais'p'os'ed 'ii'djacent to said pad. 4 7. akn qbtumtox comprising a piustic paul and (iiag'oim'll s'g'lit rings triangular in cr0s s section t (ieaa e sides of fvh cl b 1111- .,agam o gse e ge oi tl 'r'i's o sa'i in, ltbe lll lgerf 51d bf feaeh' Eing tei'm'in'atin in :1 st 'i htp contacting with the 'afi and dis pldse d s1; 'star tial ly 'atf ri t: an les to the ed estfithelhjpdttanuse Leia; H

An Rbtu'i'a'tqp eo 'lpris i'n'g "aiplastic Paul and a 'r qg'tx ia'ri'ula in brqs s' s'ecti o n the base 'sid'e offwhi c'i fbals against s'aigl 5114'}, said, ring, being s ilit giii i o'n'ally towmcl the. base freng-the'apexet ge opposed tiIGIO tO.

In testimony whereof 'I have sig'ii'ed this specifiation.

EUGENE SCHNEIDER.

Witx'jegeee; I

I .|,ANDI}1 Mge'rlcimn,

Lam ARDET. 

